Study on Reflection Characteristics of Sea Ice Contaminated by Shipping Iron Ore Powder

$Correlation of iron-powder covered area fraction and spectral features(a): Correlation of area fraction and wavelength; (b): Correlation of area fraction and reflectance$

Fig. 2. Correlation of iron-powder covered area fraction and spectral features
(a): Correlation of area fraction and wavelength; (b): Correlation of area fraction and reflectance

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$Predicted area fraction and the error$

Fig. 3. Predicted area fraction and the error

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Table 1. Area fraction distribution of the observed samples
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Table 1. Area fraction distribution of the observed samples
样本编号面积比例样本编号面积比例
海冰 0 6 0.725
1 0.258 7 0.823
2 0.372 8 0.923
3 0.461 9 0.931
4 0.521 铁矿粉 1
5 0.651

Table 2. A_cos and SAI values of samples
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Table 2. A_cos and SAI values of samples
海冰 1 2 3 4 5 6 7 8 9 铁矿粉
Acos 0.588 0.781 0.838 0.904 0.932 0.968 0.989 0.998 0.999 0.999 1
SAI 0.812 1.04 1.048 1.058 1.061 1.06 1.065 1.065 1.063 1.056 1.064

Table 3. A_cos and SAI values of sea ice with different thicknesses
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Table 3. A_cos and SAI values of sea ice with different thicknesses
A_cos SAI
海冰(28 cm) 0.671 0.965
海冰(42 cm) 0.672 0.910
海冰(6 cm) 0.622 1.000
均值(M) 0.638 0.924
标准差(SD) 0.029 0.046
M+2SD 0.696 1.017

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Bing-xin LIU, Gang GUO, Dong-lai WU, Cheng-yu LIU, Feng XIE. Study on Reflection Characteristics of Sea Ice Contaminated by Shipping Iron Ore Powder[J]. Spectroscopy and Spectral Analysis, 2021, 41(2): 489

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